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A correlation between Hammett acidity of catalysts and their activity in temperature-programmed reaction of cumene dealkylation

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Abstract

On the basis of TPR spectra of cumene adsorbed on oxide catalysts, the relationship between Hammett acidity and reciprocal benzene formation temperature (H0 = 32.50 − 18.37 х103/Tm) has been found. Using this relationship, it is possible to estimate a value of H0 for oxide materials in an interval of −5.6 < H0 < −16. The correlation between acidic strength of B-sites and rate constants of heterogeneous catalytic reactions is discussed.

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Brei, V.V., Khomenko, K.N. & Shystka, D.V. A correlation between Hammett acidity of catalysts and their activity in temperature-programmed reaction of cumene dealkylation. Reaction Kinetics and Catalysis Letters 81, 197–202 (2004). https://doi.org/10.1023/B:REAC.0000016535.01531.95

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  • DOI: https://doi.org/10.1023/B:REAC.0000016535.01531.95

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